Finding the Fourth Proportional to 8,643.17, 12,953.52 and 3,895.85

Step by Step Solution

1. Step 1: Write the proportion equation
   8,643.17 : 12,953.52 = 3,895.85 : x
2. Step 2: Convert to fraction form
   8,643.17/12,953.52 = 3,895.85/x
3. Step 3: Cross multiply
   8,643.17x = 12,953.52 × 3,895.85
4. Step 4: Simplify right side
   8,643.17x = 50,464,970.89
5. Step 5: Solve for x
   x = 50,464,970.89/8,643.17
6. Step 6: Final answer
   x = 5,838.71